Shooting Youth Baseball with the Canon 70-200 2.8

Not getting crisp shots even when little action is going on for youth baseball (ages 10-12). Mainly shooting in bright daylight on Tv at 1000 and 100 ISO. I'm using the Canon 2.8 70-200 non IS. Using AF centerpoint. Any suggestions on what the best settings are for baseball? should I use AI Servo, MF, etc.? If in hyper mode I notice AF centerpoint is useless after the first frame.